What are the precautions for using a single headed tube?
1、 For single ended tube terminals, two nuts should be tightened relative to each other during wiring. Do not apply too much force to avoid loosening the screws and damaging the electric heating tube.
2、 The terminal of the single headed tube should be kept clean and dry. Otherwise, it will reduce the insulation performance and be short circuited and broken down. If it is used in an environment with chemical corrosion, flammable, explosive liquids or gases, the wiring part of the electric heating tube should be tightly protected with insulation sealing devices to prevent accidents. In addition, the wiring outlet should be exposed outside the insulation layer or heater to prevent overheating and damage.
3、 The input power supply should not exceed 10% of the rated voltage indicated on various electric heating tubes. If applied below the rated voltage, the heat generated by a single head electric heating tube will also decrease.
4、 Single ended electric pipes should be stored in a dry warehouse. If the surface is damp due to long-term storage, a megohmmeter should be used to measure the insulation resistance before use.
5、 If the single head tube is used for a long time and there is a thick accumulation of pipe scale and oil scale on the surface, it should be removed regularly, otherwise it will reduce the heat transfer performance of the electric heating tube and cause the surface heat load of the tube to exceed the rated allowable value and be damaged.
6、 Special attention should be paid to the heating medium when selecting a single headed tube. 9. Special electric heating tubes should be carefully read the relevant instructions before installation and use to avoid damage.
7、 When heating certain substances such as adhesives, such as sodium nitrate, stearic acid, paraffin, etc., the power supply voltage should be reduced at the beginning of heating to reduce the heat generation of the electric heating tube. When all of them are melted into liquid, they should be raised to the rated voltage for heating. If it is less than 1 megaohm/500 volts, the electric heating tube should be placed in a 200 degree drying oven for drying.
8、 The heating part of the single head tube should be fully immersed in the heating medium to avoid rapid heat dissipation and exceeding the allowable heating temperature, causing damage to the electric heating tube. The material of the electric heating tube shell should have no corrosive effect.